ACPI dump
** Attachment added: ACPI dump
http://launchpadlibrarian.net/28844512/acpidump.txt
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Ubuntu 9.04 laptop overheat and shutdown
https://bugs.launchpad.net/bugs/370173
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Bugs, which is subscribed to Ubuntu.
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DMIDECODE dump
** Attachment added: DMIDECODE dump
http://launchpadlibrarian.net/28844523/dmidecode.txt
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Ubuntu 9.04 laptop overheat and shutdown
https://bugs.launchpad.net/bugs/370173
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to
Thanks Paul - I couldn't have said it better myself. Man. I've had it.
As has been pointed out AND demonstrated (I falsely believed acpi was
controlling my fan speed), the OS does NOT control the fan and that is
not the issue.
Yes, hacking the fan will *help* - simple physics will tell you that
Some of these guys seem to assume that it is known exactly what the
issue is. Are we reading the same thing? As far as I can tell, nobody
knows exactly what it is yet - hence asking for dmidecode output and
acpi dump.
To complicate the issue further, people are reporting completely
different
@arsenix - I took the Lenovo T61 apart and applied a liberal coat of
thermal paste on the cpu and gpu. I then tightened down the
heatsink/heatpipe fan unit firmly.
It seems to be running *much* cooler - I ran the stress test again and
didn't hit 70C...
This is with the fan running disengaged
I disabled the screen saver to see if that was the cause, even through the
power manager is set to turn the display off after 20 mins.
The lid is open.
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Ubuntu 9.04 laptop overheat and shutdown
https://bugs.launchpad.net/bugs/370173
You received this bug notification because you are a
I will attempt to try the kernels in Andy's post this weekend if I
possibly can and forward my results.
Maybe there is some hardware issue... I was wrong about the fan as you
so well illustrated!
But it seems like its Jaunty-centric to me - perhaps i'll be able to get
more data over the weekend.
Architecture: amd64
DistroRelease: Ubuntu 9.04
NonfreeKernelModules: nvidia
ProcEnviron:
SHELL=/bin/bash
LANG=en_US.UTF-8
Uname: Linux 2.6.28-11-generic x86_64
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
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Ubuntu 9.04 laptop overheat and shutdown
I've set /proc/acpi/ibm/fan to disengaged - which causes the fan to
run at full speed without any hardware or software control. My idle
temps are way down, but I am still periodically experiencing the thermal
shutdowns - usually while processes are running with the laptop
unattended. The fan speed
Yes James, thank you. I understand Ubuntu is not involved in the fan
control. Got it.
The thing is that I am unable to replicate the issue in any other
version of Ubuntu, nor am I able to replicate the issue in Windows XP
SP3 - running a variety of stress tests encompassing video, i/o, memory,
-) are you running it on a hard desk? I know laptops that overheat even
from a simple tablecloth beneath them.
Answer: Yes, an oak table with no tablecloth.
-) are the fans clear? Depending upon the environment fans can get
really really fast clogged.
Answer: Yes, completely free of dust and
James - http://www.thinkwiki.org/wiki/How_to_control_fan_speed
I'm using a T61
I will repeat what I posted earlier, the Lenovo T61 fan is controlled by
the thinkpad-acpi module. There is no question on this. It IS a kernel
module. It is called thinkpad-acpi - in the following you will find a
For the link challenged - how to work around your fan issue on a Lenovo
running a late version kernel
Linux Kernel 2.6.22 and Above (ibm-acpi has been replaced by thinkpad-
acpi)
To enable fan control, the module parameter fan_control=1 must be given
to thinkpad-acpi. (find the thinkpad-acpi
James -
Auto is *not* hardware controlled. When set to Auto, thinkpad-acpi is
controlling the fan speed directly. When you set it to disengage, this
means thinkpad-acpi is *disengaged* - which is the fan will run at full
speed. Thinkpad-acpi's algorithm does not spin the fan up soon enough
or
James,
I apologize as it appears you are *correct* about the embedded
controller and firmware - could it be that the hardware is expecting
some type of control from the OS? Could it be that the firmware was not
designed to regulate the temperature independent of the OS (assuming the
OS is also
@abhiropb -
On my Lenovo it is /proc/acpi/ibm/fan - using the ibm acpi module.
On your laptop it may be different. Look under /proc/acpi for something
else. I thing there is a module called acer-acpi.
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Ubuntu 9.04 laptop overheat and shutdown
https://bugs.launchpad.net/bugs/370173
You
This is the same bug mentioned above (e13) -
https://bugs.launchpad.net/ubuntu/+bug/361123
The issue is the fan speed. NOT that the processor is working at
capacity (set to performance, etc). My Lenovo T61 frequently serves as a
desktop replacement. Even with the cpu throttled it runs not.
Again - This is NOT a cpu scaling problem. Unless you are OVER
clocking your cpu, you are running it at the speed it was DESIGNED to
operate at.
The issue is cooling.
The FAN is not running fast enough, or often enough, or at the right
time, to sufficiently cool the processor.
This is NOT a CPU
You also need to REPLICATE the issue with a CONTROL.
If you just wait for the bug to happen you will ge nowhere.
I can replicate the issue EVERY time by running stress.
sudo apt-get install stress
Then run it: stress --cpu 16 --vm 2 --vm-bytes 128M
Watch your laptop shutdown.
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Ubuntu 9.04
You also need to REPLICATE the issue with a CONTROL.
If you just wait for the bug to happen you will ge nowhere.
I can replicate the issue EVERY time by running stress.
sudo apt-get install stress
Then run it: stress --cpu 16 --vm 2 --vm-bytes 128M
Watch your laptop shutdown.
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Ubuntu 9.04
The bug is labled as an overheat and shutdown issue. Normal CPU's do not
overheat when run at their designed speed. Performance does NOT mean
over clock. It simply means the cpu is running at it's highest (and
least battery friendly) mode.
This should have nothing to do with an overheating
Ok. I found a workaround.
1. you can monitor your fan speed from the thinkpad-acpi module: cat
/proc/acpi/ibm/fan
2. you can adjust the fan speed to stay on at full speed by executing the
following command as root: echo level disengaged /proc/acpi/ibm/fan
One I did that, the fan kicked up to
This laptop dual boots XP from another partition and I've not seen an
issue with cooling there. My wife runs a nearly identical T61 with 8.04
32-bit and has not experienced the same issue.
Is there a patch? When did the problem clear up Nathan? Did you take
any action?
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Lenovo T61p is running
Can anyone install stress from the repos, and replicate this issue? sudo
apt-get install stress
/$ stress --cpu 2 --io 1 --vm 1 --vm-bytes 128M --verbose
On a 'normal' laptop that has no heat issue, this takes me to about
70-80C with the CPU running at full speed.
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Lenovo T61p is running
Thanks for the response. I just came home to my cold laptop. I booted
Windows XP SP 3 and ran a prime number calculating application against
each cpu core. They ran to 100%, 2.5GHz each, and the temperature
averaged right around 90C. I could feel the fan spinning up and pumping
heat out of the
A little more data, hope this is helpful:
I ran the same stress test on my wife's T61. Hardy 32-bit
2.6.24-23-generic
Her CPU ran to 100% and after 5 minutes it had still not exceeded 65C
Clearly something is wrong... I'll be pleased to help, but I've about
exhausted my personal bag of tricks.
I am experiencing the same issue on T61 2.6.28-11-generic #42-Ubuntu SMP
Fri Apr 17 01:58:03 UTC 2009 x86_64 GNU/Linux
If I leave a background application running (boinc client, sbackup) the
laptop overheats and shuts down.
I have the cpus throttled back from 2.5 GHZ to 800MHz. Currently running
Also happens to me.
2.6.27-9-generic #1 SMP Thu Nov 20 22:15:32 UTC 2008 x86_64 GNU/Linux
NVidia 177
I also just installed the linux backports modules for intrepid to fix
the Intel 4965 iwlagn i kernel panic problems... I don't know if that
has any bearing... this is a brand new install.
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